Modeling and analysis of process configurations for solvent‐based post‐combustion carbon capture

This paper investigates different configurations for solvent-based post-combustion carbon capture processes. The aim of this paper is to find the best process configuration for amine stripping process to be used for further study. From the literature, some of the most energy-efficient schemes are identified and compared in different scenarios. It was found that for absorber, the two most talked about configurations worth investigating are inter-cooling and pump-around, while for stripper modification, rich split, lean vapor compression (LVC), and a new configuration-phase separation heat exchanger (PSHE) have shown quite promising results, although the best way of comparison would be the techno-economic analysis of all the configurations; from heuristics, two stand-alone modifications for absorber, pump-around and inter-cooling; and three stripper modifications, rich split, LVC, and PSHE combined with absorber inter-cooling are simulated and compared based on their energy consumption. The next step of this work will be the total cost calculation and heat integration of these schemes with power plant. © 2015 Curtin University of Technology and John Wiley & Sons, Ltd.

[1]  N. Lior,et al.  The theory and practice of energy saving in the chemical industry: some methods for reducing thermodynamic irreversibility in chemical technology processes , 2003 .

[2]  Magne Hillestad,et al.  Investigation of the dynamic behavior of different stripper configurations for post-combustion CO2 capture , 2012 .

[3]  Stefano Brandani,et al.  Process Simulation of Aqueous MEA Plants for Post-combustion Capture from Coal-fired Power Plants , 2013 .

[4]  Amit Chakma,et al.  CO2 capture processes — Opportunities for improved energy efficiencies , 1997 .

[5]  Ashleigh Cousins,et al.  PRELIMINARY ANALYSIS OF PROCESS FLOW SHEET MODIFICATIONS FOR ENERGY EFFICIENT CO2 CAPTURE FROM FLUE GASES USING CHEMICAL ABSORPTION , 2011 .

[6]  Gary T. Rochelle,et al.  Energy performance of advanced stripper configurations , 2013 .

[7]  Magne Hillestad,et al.  Capital costs and energy considerations of different alternative stripper configurations for post combustion CO2 capture , 2011 .

[8]  Jerry A. Bullin,et al.  Alternative Flow Schemes to Reduce Capital and Operating Costs of Amine Sweetening Units , 2006 .

[9]  Paul Feron,et al.  The potential for improvement of the energy performance of pulverized coal fired power stations with post-combustion capture of carbon dioxide , 2009 .

[10]  Zhengxiong Li,et al.  Efficient configuration/design of solvent-based post-combustion carbon capture , 2012 .

[11]  Ashleigh Cousins,et al.  Analysis of combined process flow sheet modifications for energy efficient CO2 capture from flue gases using chemical absorption , 2011 .

[12]  Gary T. Rochelle,et al.  Alternative stripper configurations for CO2 capture by aqueous amines , 2007 .

[13]  Magne Hillestad,et al.  Positive and Negative Effects on Energy Consumption by Inter–heating of Stripper in Co2 Capture Plant , 2012 .

[14]  David Shan-Hill Wong,et al.  Plantwide control of CO2 capture by absorption and stripping using monoethanolamine solution , 2011, Proceedings of the 2011 American Control Conference.

[15]  P. Feron,et al.  A survey of process flow sheet modifications for energy efficient CO2 capture from flue gases using chemical absorption , 2011 .

[16]  Amornvadee Veawab,et al.  Integration of CO2 capture unit using single- and blended-amines into supercritical coal-fired power plants: Implications for emission and energy management , 2007 .

[17]  Mohamed Kanniche,et al.  Screening of flowsheet modifications for an efficient monoethanolamine (MEA) based post-combustion CO2 capture , 2011 .

[18]  Chonghun Han,et al.  Post-Combustion CO2 Capture Process with Aqueous MEA , 2012 .

[19]  Ali Abbas,et al.  HEN optimization for efficient retrofitting of coal-fired power plants with post-combustion carbon capture , 2011 .

[20]  Stefano Freguia,et al.  Modeling of CO2 capture by aqueous monoethanolamine , 2003 .